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《Developments In Surveying and Mapping》 2002-01
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On Formalization Methods of Describing Fuzzy Region in GIS

DENG Min ①,LI Cheng-ming ②,LIN Zong-jian ③(①Wuhan University,Wuhan 430079,China;②Chinese Academy of Surveying and Mapping,Beijing 100039,China)  
Continuous region is a kind of most common entity in many fields such as environment science, land information science and so on. In current GIS databases, there is an inevitably error or fuzziness in spatial data of representing this kind of entity. Therefore, it is very important for the research on how to describe and represent the kind of entity. In this paper, we firstly analyze and summarize the modes of gathering spatial data and its sources of fuzziness. Then, the geometric structure of fuzzy region is discussed, and some shortcomings in existed researches are pointed out. Finally, a generalized model of describing fuzzy region is set up, and a new methods of formalization for fuzzy region in thematic map is presented.
【Fund】: 国家自然科学基金资助项目 (4 980 10 16 )
【CateGory Index】: P208
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